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The Single UNIX &reg; Specification, Version 2<br>
Copyright &copy; 1997 The Open Group

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<h4>NAME</h4><blockquote>
t_rcvconnect - receive the confirmation from a connection request
</blockquote><h4>SYNOPSIS</h4><blockquote>
<pre><code>

#include &lt;<a href="xti.h.html">xti.h</a>&gt;

int t_rcvconnect(
    int fd,
    struct t_call *call)
</code>
</pre>
</blockquote><h4>DESCRIPTION</h4><blockquote>
<pre>
<P><table  bordercolor=#000000 border=1 align=center><tr valign=top><th align=center><b>Parameters</b>
<th align=center><b>Before call</b>
<th align=center><b>After call</b>
<tr valign=top><td align=left>fd
<td align=center>x
<td align=center>/
<tr valign=top><td align=left>call-&gt
<td align=center>addr.maxlen
<td align=center>x
<tr valign=top><td align=left>call-&gt
<td align=center>addr.len
<td align=center>/
<tr valign=top><td align=left>call-&gt
<td align=center>addr.buf
<td align=center>?
<tr valign=top><td align=left>call-&gt
<td align=center>opt.maxlen
<td align=center>x
<tr valign=top><td align=left>call-&gt
<td align=center>opt.len
<td align=center>/
<tr valign=top><td align=left>call-&gt
<td align=center>opt.buf
<td align=center>?
<tr valign=top><td align=left>call-&gt
<td align=center>udata.maxlen
<td align=center>x
<tr valign=top><td align=left>call-&gt
<td align=center>udata.len
<td align=center>/
<tr valign=top><td align=left>call-&gt
<td align=center>udata.buf
<td align=center>?
<tr valign=top><td align=left>call-&gt
<td align=center>sequence
<td align=center>=
</table>
</pre>
<p>
This function enables a calling transport user to determine
the status of a previously sent connection request
and is used in conjunction with
<i><a href="t_connect.html">t_connect()</a></i>
to establish a connection in asynchronous mode,
and to complete a synchronous 
<i><a href="t_connect.html">t_connect()</a></i>
call that was interrupted by a signal.
The connection will be established on successful completion of
this function.
<p>
The argument
<I>fd</I>
identifies the local transport endpoint where communication will be
established,
and
<I>call</I>
contains information associated with the newly established connection.
The argument
<I>call</I>
points to a
<B>t_call</B>
structure which contains the following members:
<pre>
<code>
struct netbuf addr;
struct netbuf opt;
struct netbuf udata;
int sequence;
</code>
</pre>
<p>
In
<I>call</I>,
<I>addr</I>
returns the protocol address associated with the responding
transport endpoint,
<I>opt</I>
presents any options associated with the connection,
<I>udata</I>
points to optional user data that may be returned by
the destination transport user during connection establishment,
and
<I>sequence</I>
has no meaning for this function.
<p>
The
<I>maxlen</I>
field of each argument
must be set before issuing this function to indicate the maximum
size of the buffer for each.
However, 
<I>maxlen</I>
can be set to zero, in which case no
information to this specific argument is given to the user
on the return from 
<i>t_rcvconnect()</i>.
If 
<I>call</I>
is set to NULL, no information at all is returned.
By default,
<i>t_rcvconnect()</i>
executes in synchronous mode and
waits for the connection to be established before returning.
On return, the
<I>addr</I>,
<I>opt</I>
and
<I>udata</I>
fields reflect values associated with the connection.
<p>
If O_NONBLOCK
is set (via
<i><a href="t_open.html">t_open()</a></i>
or
<i><a href="fcntl.html">fcntl()</a></i>),
<i>t_rcvconnect()</i>
executes in asynchronous mode, and
reduces to a poll for existing connection confirmations.
If none are available,
<i>t_rcvconnect()</i>
fails and returns immediately
without waiting for the connection to be established.
(See [TNODATA] below.)
In this case,
<i>t_rcvconnect()</i>
must be called again to complete the connection establishment phase and
retrieve the information returned in
<I>call</I>.
</blockquote><h4>VALID STATES</h4><blockquote>
T_OUTCON
</blockquote><h4>ERRORS</h4><blockquote>
On failure,
<I>t_errno</I>
is set to one of the following:
<dl compact>

<dt>[TBADF]<dd>The specified file descriptor does not refer to a transport endpoint.

<dt>[TBUFOVFLW]<dd>The number of bytes allocated for an incoming argument
<I>(maxlen)</I>
is greater than 0 but not
sufficient to store the value of that argument,
and the connection information to be returned in
<I>call</I>
will be discarded.
The provider's state, as seen by the user, will be changed
to T_DATAXFER.

<dt>[TLOOK]<dd>An asynchronous event has occurred on this transport connection and requires
immediate attention.

<dt>[TNODATA]<dd>O_NONBLOCK
was set, but a connection confirmation has not yet arrived.

<dt>[TNOTSUPPORT]<dd>This function is not supported by the underlying transport
provider.

<dt>[TOUTSTATE]<dd>The communications endpoint referenced by 
<I>fd</I>
is not in one of the states in which a call to this function is valid.

<dt>[TPROTO]<dd>This error indicates that a communication problem has been detected between
XTI and the transport provider for which there is no other suitable XTI
error
<I>(t_errno)</I>.

<dt>[TSYSERR]<dd>A system error has occurred during execution of this function.

</dl>
</blockquote><h4>RETURN VALUE</h4><blockquote>
Upon successful completion, a value of 0 is returned.  Otherwise,
a value of -1 is returned and
<I>t_errno</I>
is set to indicate an error.
</blockquote><h4>SEE ALSO</h4><blockquote>
<i><a href="t_accept.html">t_accept()</a></i>,
<i><a href="t_alloc.html">t_alloc()</a></i>,
<i><a href="t_bind.html">t_bind()</a></i>,
<i><a href="t_connect.html">t_connect()</a></i>,
<i><a href="t_listen.html">t_listen()</a></i>,
<i><a href="t_open.html">t_open()</a></i>,
<i><a href="t_optmgmt.html">t_optmgmt()</a></i>.
</blockquote><hr size=2 noshade>
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UNIX &reg; is a registered Trademark of The Open Group.<br>
Copyright &copy; 1997 The Open Group
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